
DORABO
Strong alternative with matching wire gauge, but a lower current rating that requires engineering validation.
The Phoenix Contact 1715721 is a 2-position, 5.08mm pitch terminal block rated for 17.5A. While many form-fit alternatives exist, finding a substitute requires careful attention to the current rating, as most similar parts are rated for 16A or less.
All candidates have a lower current rating (10A-16A) than the target's 17.5A.
Multiple candidates match the 2-position, 5.08mm pitch, through-hole package.
Many manufacturers produce similar terminal blocks, offering a good supply base if electrical parameters can be relaxed.
No direct, drop-in replacement with an equal or higher current rating was found. All form-fit compatible alternatives have a lower current rating, requiring engineering review.
Use a substitute with matching wire gauge like DG127-5.08-02P-14-02A(H) or DB127S-5.08-2P-GN-S, but only if the application's current draw is safely below the candidate's lower rating (12A-15A).
The primary risk is electrical overstress due to the lower current ratings of all available alternatives, which can lead to component failure or a fire hazard.

DORABO
Strong alternative with matching wire gauge, but a lower current rating that requires engineering validation.
| Feature / factor | 1715721 | DB127S-5.08-2P-GN-S | DG127-5.08-02P-14-02A(H) | MX128L-5.08-02P-GN01-Cu-Y-A | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2-pos, 5.08mm, Through Hole | 2-pos, 5.08mm, Through Hole | 2-pos, 5.08mm, Through Hole | 2-pos, 5.08mm, Through Hole | 2-pos, 5.08mm, Through Hole — Form and fit match.; DG127-5.08-02P-14-02A(H): Form and fit match.; MX128L-5.08-02P-GN01-Cu-Y-A: Form and fit match.; XYEK500-5.08-2P: Form and fit match. |
| Current | 17.5 A | 15 A | 12 A (UL) / 15 A (IEC) | 16 A | 15 A / 12 A (UL) / 15 A (IEC) / 16 A — Candidate current rating is lower.; DG127-5.08-02P-14-02A(H): Candidate current rating is lower.; MX128L-5.08-02P-GN01-Cu-Y-A: Candidate current rating is lower.; XYEK500-5.08-2P: Candidate current rating is lower. |
| Voltage | 250 V | 300 V | 300 V (UL) / 250 V (IEC) | 300 V | 300 V / 300 V (UL) / 250 V (IEC) — Higher voltage rating is acceptable.; DG127-5.08-02P-14-02A(H): Voltage ratings are compatible.; MX128L-5.08-02P-GN01-Cu-Y-A: Higher voltage rating is acceptable.; XYEK500-5.08-2P: Higher voltage rating is acceptable. |
| Wire Gauge | 26-14 AWG | 26-14 AWG | 26-14 AWG | 28-12 AWG | 26-14 AWG / 28-12 AWG / 24-12 AWG — Wire gauge range is an exact match.; DG127-5.08-02P-14-02A(H): Wire gauge range is an exact match.; MX128L-5.08-02P-GN01-Cu-Y-A: Wider range covers target's range.; XYEK500-5.08-2P: Range differs; does not support 26 AWG. |
The best alternatives are DG127-5.08-02P-14-02A(H) and DB127S-5.08-2P-GN-S because they match the form, fit, and wire gauge. However, they have lower current ratings (12A-15A vs 17.5A) and require careful application review.